Intermediate
30 min

Precisely tracks an object's movement and orientation in three-dimensional space with ICM-42605 and PIC18F57Q43

Mastering motion: Exploring 3D space with 6DOF IMUs

6DOF IMU 18 Click with Curiosity Nano with PIC18F57Q43

Published Feb 13, 2024

Click board™

6DOF IMU 18 Click

Dev. board

Curiosity Nano with PIC18F57Q43

Compiler

NECTO Studio

MCU

PIC18F57Q43

Empower your projects with 6DOF IMU, the ultimate solution for capturing and controlling motion in three-dimensional space

A

A

Hardware Overview

How does it work?

6DOF IMU 18 Click is based on the ICM-42605, a 6-axis motion tracking device that combines a 3-axis gyroscope and a 3-axis accelerometer from TDK InvenSense. It features a 2K-byte FIFO that can lower the traffic on the selected serial bus interface and reduce power consumption by allowing the system processor to burst read sensor data and then go into a low-power mode. With its 6-axis integration, the ICM-42605 guarantees optimal motion performance for customers. The IICM-42605 supports an extended operating temperature range, allowing customers to design it into various industrial IoT applications, including navigation and stabilizing industrial machinery and robots. The gyroscope supports eight programmable full-scale range settings from ±15.625dps to ±2000dps, and the accelerometer

supports four programmable full-scale range settings from ±2g to ±16g. Other industry-leading features include on-chip 16-bit ADCs, programmable digital filters, an embedded temperature sensor, and programmable interrupts. The ICM-42605 also provides high robustness by supporting 20,000g shock reliability. This Click board™ allows the use of both I2C and SPI interfaces at a maximum frequency of 1MHz for I2C and 24MHz for SPI communication. Selection is made by positioning SMD jumpers marked COMM SEL to the appropriate position. All jumpers must be on the same side, or the Click board™ may become unresponsive. When the I2C interface is selected, the ICM-42605 allows the choice of its I2C slave address, using the ADDR SEL SMD jumper set to an appropriate position

marked 1 or 0. In addition to communication pins, this board also possesses additional interrupt pins, routed to the INT and IT2 pins on the mikroBUS™ socket, to signal MCU that an event, such as specific tap or sample acquisition conditions, has happened. Besides the standard interrupt function, the IT2 pin can also be used as a Frame Synchronization signal for synchronization with an external digital signal. This Click board™ can be operated only with a 3.3V logic voltage level. The board must perform appropriate logic voltage level conversion before using MCUs with different logic levels. Also, it comes equipped with a library containing functions and an example code that can be used as a reference for further development.

6DOF IMU 18 Click top side image
6DOF IMU 18 Click bottom side image

Features overview

Development board

PIC18F57Q43 Curiosity Nano evaluation kit is a cutting-edge hardware platform designed to evaluate microcontrollers within the PIC18-Q43 family. Central to its design is the inclusion of the powerful PIC18F57Q43 microcontroller (MCU), offering advanced functionalities and robust performance. Key features of this evaluation kit include a yellow user LED and a responsive

mechanical user switch, providing seamless interaction and testing. The provision for a 32.768kHz crystal footprint ensures precision timing capabilities. With an onboard debugger boasting a green power and status LED, programming and debugging become intuitive and efficient. Further enhancing its utility is the Virtual serial port (CDC) and a debug GPIO channel (DGI

GPIO), offering extensive connectivity options. Powered via USB, this kit boasts an adjustable target voltage feature facilitated by the MIC5353 LDO regulator, ensuring stable operation with an output voltage ranging from 1.8V to 5.1V, with a maximum output current of 500mA, subject to ambient temperature and voltage constraints.

PIC18F57Q43 Curiosity Nano double side image

Microcontroller Overview

MCU Card / MCU

default

Architecture

PIC

MCU Memory (KB)

128

Silicon Vendor

Microchip

Pin count

48

RAM (Bytes)

8196

You complete me!

Accessories

Curiosity Nano Base for Click boards is a versatile hardware extension platform created to streamline the integration between Curiosity Nano kits and extension boards, tailored explicitly for the mikroBUS™-standardized Click boards and Xplained Pro extension boards. This innovative base board (shield) offers seamless connectivity and expansion possibilities, simplifying experimentation and development. Key features include USB power compatibility from the Curiosity Nano kit, alongside an alternative external power input option for enhanced flexibility. The onboard Li-Ion/LiPo charger and management circuit ensure smooth operation for battery-powered applications, simplifying usage and management. Moreover, the base incorporates a fixed 3.3V PSU dedicated to target and mikroBUS™ power rails, alongside a fixed 5.0V boost converter catering to 5V power rails of mikroBUS™ sockets, providing stable power delivery for various connected devices.

Curiosity Nano Base for Click boards accessories 1 image

Used MCU Pins

mikroBUS™ mapper

Interrupt/Frame Sync
PA0
AN
NC
NC
RST
SPI Chip Select
PD4
CS
SPI Clock
PC6
SCK
SPI Data OUT
PC5
MISO
SPI Data IN
PC4
MOSI
Power Supply
3.3V
3.3V
Ground
GND
GND
NC
NC
PWM
Interrupt
PA6
INT
NC
NC
TX
NC
NC
RX
I2C Clock
PB2
SCL
I2C Data
PB1
SDA
NC
NC
5V
Ground
GND
GND
1

Take a closer look

Click board™ Schematic

6DOF IMU 18 Click Schematic schematic

Step by step

Project assembly

Curiosity Nano Base for Click boards front image hardware assembly

Start by selecting your development board and Click board™. Begin with the Curiosity Nano with PIC18F57Q43 as your development board.

Curiosity Nano Base for Click boards front image hardware assembly
Charger 27 Click front image hardware assembly
PIC18F47Q10 Curiosity Nano front image hardware assembly
Prog-cut hardware assembly
Curiosity Nano with PICXXX Access MB 1 - upright/background hardware assembly
Necto image step 2 hardware assembly
Necto image step 3 hardware assembly
Necto image step 4 hardware assembly
Necto image step 5 hardware assembly
Necto image step 6 hardware assembly
PIC18F57Q43 Curiosity MCU Step hardware assembly
Necto No Display image step 8 hardware assembly
Necto image step 9 hardware assembly
Necto image step 10 hardware assembly
Debug Image Necto Step hardware assembly

Track your results in real time

Application Output

1. Application Output - In Debug mode, the 'Application Output' window enables real-time data monitoring, offering direct insight into execution results. Ensure proper data display by configuring the environment correctly using the provided tutorial.

2. UART Terminal - Use the UART Terminal to monitor data transmission via a USB to UART converter, allowing direct communication between the Click board™ and your development system. Configure the baud rate and other serial settings according to your project's requirements to ensure proper functionality. For step-by-step setup instructions, refer to the provided tutorial.

3. Plot Output - The Plot feature offers a powerful way to visualize real-time sensor data, enabling trend analysis, debugging, and comparison of multiple data points. To set it up correctly, follow the provided tutorial, which includes a step-by-step example of using the Plot feature to display Click board™ readings. To use the Plot feature in your code, use the function: plot(*insert_graph_name*, variable_name);. This is a general format, and it is up to the user to replace 'insert_graph_name' with the actual graph name and 'variable_name' with the parameter to be displayed.

Software Support

Library Description

This library contains API for 6DOF IMU 18 Click driver.

Key functions:

  • c6dofimu18_set_reg_bank - 6DOF IMU 18 set register bank function

  • c6dofimu18_get_int1_state - 6DOF IMU 18 read INT1 pin state function

  • c6dofimu18_get_data_from_register - 6DOF IMU 18 read data function.

Open Source

Code example

The complete application code and a ready-to-use project are available through the NECTO Studio Package Manager for direct installation in the NECTO Studio. The application code can also be found on the MIKROE GitHub account.

/*!
 * @file main.c
 * @brief 6DOF IMU 18 Click example
 *
 * # Description
 * This library contains API for 6DOF IMU 18 Click driver. 
 * The library initializes and defines the I2C and SPI bus drivers to 
 * write and read data from registers, as well as the default 
 * configuration for reading gyroscope and accelerator data, and temperature.
 *
 * The demo application is composed of two sections :
 *
 * ## Application Init
 * Initializes the driver after that resets the device and 
 * performs default configuration and reads the device id.
 *
 * ## Application Task
 * This example demonstrates the use of the 6DOF IMU 18 Click board by 
 * measuring and displaying acceleration and gyroscope data for X-axis, 
 * Y-axis, and Z-axis as well as temperature in degrees Celsius.
 *
 * @author Stefan Ilic
 *
 */

#include "board.h"
#include "log.h"
#include "c6dofimu18.h"

static c6dofimu18_t c6dofimu18;
static log_t logger;

void application_init ( void )
{
    log_cfg_t log_cfg;  /**< Logger config object. */
    c6dofimu18_cfg_t c6dofimu18_cfg;  /**< Click config object. */

    /** 
     * Logger initialization.
     * Default baud rate: 115200
     * Default log level: LOG_LEVEL_DEBUG
     * @note If USB_UART_RX and USB_UART_TX 
     * are defined as HAL_PIN_NC, you will 
     * need to define them manually for log to work. 
     * See @b LOG_MAP_USB_UART macro definition for detailed explanation.
     */
    LOG_MAP_USB_UART( log_cfg );
    log_init( &logger, &log_cfg );
    log_info( &logger, " Application Init " );

    // Click initialization.
    c6dofimu18_cfg_setup( &c6dofimu18_cfg );
    C6DOFIMU18_MAP_MIKROBUS( c6dofimu18_cfg, MIKROBUS_1 );
    err_t init_flag = c6dofimu18_init( &c6dofimu18, &c6dofimu18_cfg );
    if ( ( I2C_MASTER_ERROR == init_flag ) || ( SPI_MASTER_ERROR == init_flag ) )
    {
        log_error( &logger, " Communication init." );
        for ( ; ; );
    }
    Delay_ms( 100 );
    
    uint8_t id = 0;
    c6dofimu18_reg_read( &c6dofimu18, C6DOFIMU18_BANK0_SEL, C6DOFIMU18_REG_WHO_AM_I, &id, 1);
    log_printf( &logger, " Device ID : 0x%.2X \r\n", ( uint16_t ) id );
    if ( C6DOFIMU18_WHO_AM_I_VALUE != id )
    {
        log_error( &logger, " Communication error." );
        for ( ; ; );
    }
    Delay_ms( 100 );
    
    if ( C6DOFIMU18_OK != c6dofimu18_default_cfg ( &c6dofimu18 ) )
    {
        log_error( &logger, " Default configuration." );
        for ( ; ; );
    }
    
    log_info( &logger, " Application Task " );
}

void application_task ( void )
{
    if ( c6dofimu18_get_int1_state( &c6dofimu18) )
    {       
        c6dofimu18_data_t accel_data;
        c6dofimu18_data_t gyro_data;
        float temp_data;
        uint32_t tmst_data;
        
        c6dofimu18_get_data_from_register( &c6dofimu18, &temp_data, &accel_data, &gyro_data, &tmst_data );
        log_printf( &logger, " TEMP: %.2f \r\n", temp_data );
        log_printf( &logger, " GYRO: x:%d y:%d z:%d \r\n", gyro_data.data_x,gyro_data.data_y,gyro_data.data_z );
        log_printf( &logger, " ACCEL: x:%d y:%d z:%d \r\n", accel_data.data_x,accel_data.data_y,accel_data.data_z );
        log_printf( &logger, "========================== \r\n" );
        Delay_ms( 1000 );
    }    
}

void main ( void )
{
    application_init( );

    for ( ; ; )
    {
        application_task( );
    }
}

// ------------------------------------------------------------------------ END

Additional Support

Resources

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